Talent is to blaze up, it’s said (5)
I believe the answer is:
flair
'talent' is the definition.
(I know that flair is a type of talent)
'blaze up it's said' is the wordplay.
'blaze up' becomes 'flare' (synonyms).
'it's said' shows a homophone (sound like).
'flare' is a homophone of 'FLAIR'.
'is to' is the link.
(Other definitions for flair that I've seen before include "Natural talent and aptitude" , "Creative brilliance" , "Stylish talent" , "?lan, dash" , "Stylishness; talent" .)